Hi has anyone experienced, during cold weather and after about 10 mins into a journey (only after the car/engineer is cold) a sudden change to the car into a kind of 'safe mode' operation.

This will only let you pull away very slowly and even slower when trying to change up in gear.

If you switch the engine off and restart, it seems to reset everything and its runs fine. The car has been running very well otherwise with no signs of any problems. This will not then happen again until the car has been left all day or over night. It seems as if once it has warmed up a bit its happy.

I wondered if it was related to the exhaust emission sensors or detecting a CO imbalanceor something like that ???